Series fifteen reveals shocking discoveries, laughter and tears along the way, as our eight celebrities travel around the world to unearth the secrets of their ancestors. Michelle Keegan uncovers some exceptional women on her family tree as she unearths a special connection to suffragette leader Emmeline Pankhurst.

Olivia Colman’s journey is one of equal contrasts as she voyages from her family home in Norfolk to India, discovering that her ancestry is more diverse than she had originally thought. While Lee Mack’s investigation brings to light a comedy connection to his great-grandfather who performed on the frontline during WW1.

From adultery to asylums, illicit drinking dens to revolutions, our celebrities travel round the world, from Gibraltar to Genoa, India, Jamaica, South Africa and Latvia, as they solve the mysteries in their family trees.

The series will air on BBC One over the summer with Michelle Keegan’s episode launching the series as part of the ‘Hear Her’ Season on the BBC which marks the centenary of women getting the vote.

Executive Producer for programme makers Wall to Wall, Colette Flight, said: “Britain’s best loved stars are once again delving into their family trees, uncovering hidden secrets and solving mysteries. The stories they unearth are revelatory, often unexpectedly humorous but always affecting.”

BBC Commissioning Editor Fatima Salaria added: “The enduring appeal of Who Do You Think You Are is set to continue as BBC One broadcasts a huge host of names in series 15 including Olivia Colman, Boy George, Marvin Humes and Judge Rinder, which are guaranteed to move and entertain audiences.

"We’re particularly honoured to launch the series with Michelle Keegan’s episode which uncovers her special connection to Emmeline Pankhurst, as part of the BBC’s ‘Hear Her’ season. This is must see TV at its best.”